I got the book and read it hoping that I might be able to glean something I hadn't already tried, and found out I was already doing everything the book recommended, and have been for a long time and I STILL have a major panic disorder with severe panic attacks. I've been a perfectionist about diet and exercise and trying to practice positive thinking, and while they may help people who have nothing else going on in their lives but unexplained anxiety with some minor physical reactions, it didn't even begin to touch on the problems that I'm faced with, not just because of the severity of my physical reactions, but because of the complexity of the circumstances in my life. This is really for the people who can manage their panic on their own, without the help of a qualified therapist. If you have severe panic problems, I would recommend a qualified therapist over reading this book. And by qualified, I mean someone who specializes in panic attacks, because the average therapist (and I've been to too many of those) doesn't even begin to know how to manage someone with panic attacks. It takes someone who can be very gentle, and patient, and non-condemning to work with people who suffer from severe panic attack disorders.